Riveting-machine.



W. COLLINGWOOD.

RIVETING MACHINE. APPLICATION FILED IuNEzI, 1914.

1,165,851., t Patented Dec.28, 1915.

l 6] il WILLIIVI COLLINGWOOD, OF NEWTN-LEVILLQWS, ENGLAND,

ASSIGNOE T0 THE RIV ETIN (3f-MACHINE. I

Specification of Letters Patent.

Patented Dec. 28,1915..

Application iled June 2?, 191e. Serial No. 847,632.

To all whom t may Concern Be it known that l, lTiLLnxM Continowoon, a subject of the King oi' Great- Britain, residing at Locomotive lllorlrs, Newton-le-ldlillows, in the county of Lancaster, England, have invented certain new and useful lmprovements in or Relating to Riveting-ltlachines, of which the following is a' specification.

rlhis invention relates to riveting machines, especially of the pneumatic type, and provides an improved form of apparatus enabling the riveting operation to be elti'ected by riveting tools applied to both ends of the rivet or stay independently or simultaneously, so that the ordinary holder up is dispensed with.

According to this invention two riveters or hammers are so mounted on opposed supports as to enable one tool to be applied to one end of the rivet or stay while the other tool is applied to the other end, either tool acting as holder up to the second tool. The tools may synchronize in their action or may work alternately or independently, so that both heads of the rivets or stays may be formed simultaneously or one atter the other as found desirable. The combined riveters maintain a continuous though variable holding pressure on each head ot the rivet or stay while blows are indepenc ently delivered to one or both ends.

A convenient method oi' support is to mount the two riveters adjustably in the ends or heads of the arms of a horse shoe or yoke frame which can be suspended by means of a ring or like device carried by a screw rod extending across the upper part or middle oi' the horse shoe and displaceable on the said rod. The force oit the blows and the holding up pressure may be adjusted 'from either side of the machine by varying the distance between the two riveters, and this distance can be regulated during the formation of the rivet or stay heads.

The riveters (or one of them) may be mountedin pivoted heads so that they may be directed at any desired angle to each other. rhe pivots may also be adjustable eccentrically or otherwise in the :trame to allow the riveters to be raised orlowered relatively to each other.

ln order that the said invention may be clearly understood and. readly'carried into eiiectlwill describe the same more fully with reference to the accompanying drawings, in which Figures l and 2 are elevations ot a. riveting machine embodying my invention, the riveters or hammers being mounted in pivoted or swiveling heads. Fig. la is a detail view of one ot the heads, and Figs. 3 and e are detail views showing respectively a iiXed head and a piston and fluid pressure device for holding up and releasing the rivet.

A is the trame oi horse-shoe or yoke form with riveting heads B at the ends of the two arms.

C is a screw rod at the upper part of the frame, receiving` the ring bar c and turned in bearings a by means of the pulley o and chains c2.

D, D are the riveters or hammers, of the usual construction and provided with the trigger Z by which the hammer air pressure is controlled.

Referring to Fig. l the heads B are pivoted to the frame arms at b, the frame being shown as constructed of two plates connected together by short stays a. llfhe heads D lie between the lower ends of the two plates. rihe head is adjusted pivotally by a worm E mounted in bearings e in the frame and provided with a small hand wheel e by which it is turned, the worm engaging worm teeth at the end of the arm or extension 6" ot the head B. .A spring stud e2 may be used to lock the wheel in adjusted position. The chain lines indicate the range of angular adjustment allowed to the heads and therefore to the riveters, so that the latter may be set to form heads at right angles to the axis ot' the stay or one or both of the stay heads may be formed at an oblique angle to the stay axis. An example of the worlr to which the riveting machine may be applied is shown between the riveters, comprising two plates F connected by stays j". T he work shown in chain lines has the plates slightly diverging and in this case the stay heads would have to be formed obliquely with relation to the axes of the stays.

rlhe riveters or hammers may be mounted in sleeves G screwed into the tapped eyes or nuts o of the heads B and adjusted by the handle g, which is adjacent to the trigger al so that both can be held in one hand. The sleeve is adjusted in they head so:y as.A to' move the riveter nearer to or farther from the work and thus to increase or decrease the force of the holding up pressure or the blows, which are also controlled by the trigger Z in the usual manner. The riveter is held in the sleeve G by the thrust clips g securely fixed to the sleeves. To take up wear in the screw the eye 2) is split and a set screw b2 (Fig. 2) is provided to tighten up the eye when necessary, so that there may be no looseness in the mounting of the sleeve G'. In some cases the separate sleeve G may be dispensed with and the riveter screwed directly into the nut The adjustment in this case is similar to that already described.

The head B shown at the right hand side of Fig. l and in Fig. la has a further adjustment which enables the pivot axis to be displaced so that one riveter or hammer D may move up or down relatively to the other. F or this purpose the head B is mounted on an eccentric pin b3 which can be turned in the end of the frame by means of an adjusting handle o* and locked in adjusted position by the locking handle b5 or other convenient means. The worm teeth o6 engaged by the worm E are arranged on the face of the arm 7)* and are mounted on the pivot pin o7 to allow the angle of the teeth to adjust themselves to the worm as the arm o* turns. The teeth are vertically cut and slide over the worm without disengaging, during the adjustment of the eccentric 3.

Apart from the angular adjustment of the riveter heads the frame A as a whole may be suspended at an angle by displacing the ring c along the screw rod C on either side of the central axis of the frame. This is effected by turning the pulleys c', so that the whole apparatus is under complete control during the progress of the work. To enable operators who are not in sight of each other, owing to the intervening work, to signal any alteration in position required, the signaling arms II at the sides of the frame are connected by the rods L and bell crank levers la so as to move together.

In the modification shown in Fig. 3 the head B is fixed in the ends of the frame A so that no angular adjustment of the riveter is permitted. Otherwise the construction may be the same as that already described. One arm of the frame A may be provided with a fixed head B and the other with an adjustable head B if found convenient for the work.

In the modification illustrated in Fig. 4 a pivoted head B2 is shown, but instead of mounting the riveter in a screwed sleeve the head B2 is made in the form of a fluid pressure cylinder and the riveter is provided with a piston d which slides in this cylinder. The riveter is held up to and re.-

leased from its work by the air pressure on the bach of the piston and the handle 3, which corresponds to the sleeve adjusting handle g of Fig. l, regulates the pressure of the air and thus the holding up force of the tool.

The machine may be made with fluid pres` sure holding up devices for both riveters supports, two pneumatic hammers mounted in the said supports so as to oppose each other, and means for adjusting one of the said hammers axially in its support.

3. In a riveting machine, a frame having depending arms, riveter supports in the ends of the said arms, a screwed suspension rod in bearings at the top of the frame, means for turning the said rod, a suspension device adjustably mounted on the rod, and two riveters mounted in the said supports so as to oppose each other.

4. In a riveting machine, two opposed riveter supports, and twoV riveters mounted in the said supports so as to oppose each other and an adjustable nut and screw connection between the riveters and the supports.

5. In a riveting machine, two opposed riveter supports, two riveters, screw threaded sleeves screwing adjustably in the riveter supports and thrust clips securing the said riveters in the sleeves.

6. In a riveting machine, a frame having two depending arms with riveter supports, two opposed riveters mounted in the said supports and a signaling device extending from one side of the frame to the other.

7. In a riveting machine, a frame with two opposed riveter supports of which one is pivoted in the frame, an arm on the said pivoted support and a worm engaging said arm for varying the angular position of the arm and support.

8. In a riveting machine, a frame with two opposed riveter supports each of which is pivoted in the frame, arms on the said supports and an adjusting worm between each arm and its support.

In a riveting machine, a frame with two opposed riveter supports of which one is pivoted in the frame, means for angularly adjusting the said pivoted support and means for displacing the pivot axis in the frame.

l0. In a riveting machine, a frame with two opposed riveter supports of which one is Copes of this patent may be obtained for ve cents each, by addressing the cally mounted pivot on which one of the said supports is carried, means for angularly adjusting the said pivoted support, an adjusting arm on one end of the said eccentric pivot whereby the pvot is angularly adjusted and a locking arm on the other end of the pivot.

In testimony whereof I aiiix my signature in presence of two witnesses.

WV. COLLINGWOOD. Witnesses:

T. SELBY VVARDLE, T. J. CooKsEY.

Commissioner of Patents,

Washington, D. C. 

